Deck trough



July 15, 1930.

J. G. CLAYBOURN ET AL 1,770,840

DECK TROUGH I Filed Nov. 1927 INV Tos v ATTORNEYS Patented July 1 5, 1930 V UNITED JOHN e. CLAYBOURN AND Herman-room; or Prinazo MI UEL, CANAL. ZONE 7 mick TROUGH Application filed November.

This invention relates to fluid-conducting apparatus and is'paiticularly ia iplicable for use on hydraulicdredges and the like where large quantities of fluid or mixtures of fluid and solid materialunustbe conveyed." rleretofore hydraulic dredges hate been constructed in which the'discharge line extending through the hull of the dredgefroiii the pump has been situated' below decks, 10 sometimes passing through a numberof s ater-tight compartments. Dueto the large quantities' 'oi abrasive solid material carried by the 'Water through the dischar pipe constituting the line rapidly becomes worn and must frequently be replaced. Morecver", to prolong .theplife ofthepipe, itis advantageous to periodically. rotate the same to bring dinerent parts otthe interior su'rface into contact with the abrasive material" and so distribute the Wear throughout the entire interior of the pipe. Such replacement or turning 01* t e pipe is a verylaborious and expensive operation, due to the necessaryobstructlons consltltutmg part of the frames work of the hull of the dredge. If the hull is divided into Water-tight compartments, Water-tight joints must be made at each bulkhead Where the pipeline passes therethrough, requiring the provision of packed joints, these needing attention even when the pipe is not being changed, and adding greatly to the labor of replacing or moving the pipe. The pipe lines from the dredgeare usually very long, sometimes over a mile in length and with considerable terminal elevation. If a break in the line occurs in the dredge there is no means to prevent the material in the whole line from running back into the dredge.

When that happens the dredge usually sinks 49 and many dredges have sunk from that cause, entailing great expense to raise the dredge and recondition the apparatus. Dredges have also been constructed in which the discharge line is situated on deck. lVhile this arrangement renders the pipe much more. 210-,

ge line; the

3, 927. whim; 236,729,

'By applications of ourinvention, \ve'are able to eliminate thedisadvantages of both prior types of dre'dges. V

The invention itself will bebettei'" under stood from the, description of oa'eprheuai embodiment thereof, illustrated'fin the accompanying drawing, in which- Tie a fragmentaryplanisection of a hull, a centrifugal pumps. '7 The outer SW face he the hull chmpnees i 'iauhgs, the the hull" is divided by two'longit'u'dinally extend or machinery Well and v two Water-tanks 5 and 5 along-the sides. Tliqwater tanks-are in him divided into 'aplui ality of tempera; ments transversely extendin bulkheads 6-; The'disc'harge' line leadingfrom the pu- "p is brought upwardly into the ;-space between the side'p'lating and one longitudihal'bulk head; The hp er pert of'the" tank on this side is provided with transversely extending tank-top? below deck lever, This tank-top is provided on its'uppersuri'ace with cradles S in'yvhiCh the dischargpipe 9 is sapphrted; The deck above the trough so formed composed of deck plates or l1at'c'lres 10, hinged, as

ing bulkheads l into a main central portion at 11, so that they may be raisdto afford convenientacc ess to theypipe; the deck'p'late's, when lowered, being supported upon reniov-J' able strongbacks 12. i Suitable scuppe'rs 13 are provided for conducting Water-from the interiorof the trough to the ,efxt'e'riorof the hull. It will be seen that the discharge line is p0- sitioned below the surface of the deck and so does not obstruct the same, that any leakage in theline carried away by the souppers and cannot reach the interior of the hull, an d that ready acce'ss' 't o the pipe maybe'h'ad for replacemei rt, repair, orperio'dic rotation to distribute he were over the entire interior s'urfacethereof;

the described application of this in i vent-ion, a section of pipe may be used until worn entirely through before replacement is necessary. It should be noted in this connection, that with ordinary installations it is necessary to drill test holes in the pipe periodically, and to renew the pipe long before it is worn out, simply as a precautionary measure. V f I V g If the discharge line becomes ruptured, no leakage therefrom reaches the interior of the hull, nor can waterfrom the outside back up through the pipe to flood the hull, as in the case of some prior types of dredges.

\Vhile the trough is shown as formed by the side plating, the bulk head,iand the tanktop,

it might be formed in any other desired manner, and 1s particularly advantageous in hulls which are not dlvlded into compartments by bulkheads, and which would become entirely filled by a leak inthe pipe. .All slip-joints and the like which were necessary in installing pipe lines through a plurality of compartments havebeen eliminated and a continuous cast iron pipe may be used.

lVhile we have described the illustrated embodiment of our invention in' some particularity, this embodiment is described by way of illustration only, and not by way of limitation, and we do not, therefore, limit ourselves to the precise details so described, but claim as our invention all the'embodiments thereof falling within the Scope of. the appended claims. p I Weclaim: r

1. A hull for, dredges comprising an inner framework and a covering plating, an up: wardly extending longitudinal bulkhead ad: jacent one side thereof, a tank top between said side and bulkhead, and below the upper edges thereof, the tank-top, bulkhead and side forming a water-tight trough for receiving a pipe, a removable covering for the trough, and scuppers leading from said trough to the exterior of said hull.

2. A hull for dredges comprlsing a frame work and outer plating, an upwardly extending longitudinal bulkhead adjacent one side thereof, a tank top between said side and said bulkhead, and below the deck level of the hull, the side plating, bulkhead and tank top forming a. trough, removable hatches covering the trough, removable strong-backs supporting said hatches, and a pipe extending longitudinally within said trough.

3. In a hydraulic dredge, a water tight trough extending longitudinally thereof and open to the deck, a pipeline therein, and means for draining fluid from the trough to the exterior of the dredge hull.

4. In a hydraulic dredge, a water tight trough extending longitudinally thereof above the water line and open to the deck, a pipe line therein, and means for drawing fluid from the trough to the exterior of the dredge hull. V Y

5. 'A hull having a longitudinally extendingwater tight trough immediately below the level of the deck, removable hatches covering said trough and forming a continuation of the deck, and scuppers from the trough to the exterior of the hull.

6. A hull having a water tight trough extending longitudinally thereof, and open throughout'its top to thedeck, the bottom of the trough being above the load water line, scuppers from the trough to the exterior of the hull, and a removable covering for the trough.

7. A hull having a longitudinally extending water tight trough immediately below the level of the deck and above theload water line, a conduit extending along said trough below the level. of the deck, removablestrongbacks crossing the trough above the conduit, and hatches carried by said strong backs and the deck; i e

8. A hull having a longitudinally extending water tight trough immediatelv below the level of the deck and above the load water line, draining means from the trough to the exterior of the hull, and'a continuous series of hatches overlying the top of the trough.

In testimony whereof we hereunto affix our signatures this 14th day of October, 1927.

I .JOHN G; GLAYBOURN.

LEONARD FOOTE. 

